https://wiki.scott5.org/index.php?action=history&feed=atom&title=How_to_free_kernel_memoryHow to free kernel memory - Revision history2026-06-14T20:15:54ZRevision history for this page on the wikiMediaWiki 1.43.1https://wiki.scott5.org/index.php?title=How_to_free_kernel_memory&diff=1049&oldid=prevScott at 16:11, 13 September 20122012-09-13T16:11:31Z<p></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 16:11, 13 September 2012</td>
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<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>If memory seems to be consumed but you can't account for it all, check with <code>atop</code>. You may see that '''slab memory''' <del style="font-weight: bold; text-decoration: none;">is very high</del>. If so, use the <code>slabtop</code> tool to see what's being used. If you need to free <del style="font-weight: bold; text-decoration: none;">this </del>memory, try this:</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>If memory seems to be consumed but you can't account for it all, check with <code>atop</code>. You may see that <ins style="font-weight: bold; text-decoration: none;">the kernel is holding a bunch of </ins>'''slab memory'''. If so, use the <code>slabtop</code> tool to see what <ins style="font-weight: bold; text-decoration: none;">it</ins>'s being used <ins style="font-weight: bold; text-decoration: none;">for</ins>. If you need to free <ins style="font-weight: bold; text-decoration: none;">the slab </ins>memory, try this:</div></td></tr>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>sync ; echo 2 > /proc/sys/vm/drop_caches</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>sync ; echo 2 > /proc/sys/vm/drop_caches</div></td></tr>
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</table>Scotthttps://wiki.scott5.org/index.php?title=How_to_free_kernel_memory&diff=1048&oldid=prevScott: Created page with 'If memory seems to be consumed but you can't account for it all, check with <code>atop</code>. You may see that '''slab memory''' is very high. If so, use the <code>slabtop</co…'2012-09-13T16:10:22Z<p>Created page with 'If memory seems to be consumed but you can't account for it all, check with <code>atop</code>. You may see that '''slab memory''' is very high. If so, use the <code>slabtop</co…'</p>
<p><b>New page</b></p><div>If memory seems to be consumed but you can't account for it all, check with <code>atop</code>. You may see that '''slab memory''' is very high. If so, use the <code>slabtop</code> tool to see what's being used. If you need to free this memory, try this:<br />
<pre><br />
sync ; echo 2 > /proc/sys/vm/drop_caches<br />
</pre></div>Scott